Kiviniemi Antti M, Hautala Arto J, Kinnunen Hannu, Tulppo Mikko P
Department of Exercise and Medical Physiology, Verve Research, Kasarmintie 13, P.O. Box 404, 90101, Oulu, Finland.
Eur J Appl Physiol. 2007 Dec;101(6):743-51. doi: 10.1007/s00421-007-0552-2. Epub 2007 Sep 12.
Purpose of this study was to test utility of heart rate variability (HRV) in daily endurance exercise prescriptions. Twenty-six healthy, moderately fit males were randomized into predefined training group (TRA, n = 8), HRV-guided training group (HRV, n = 9), and control group (n = 9). Four-week training period consisted of running sessions lasting 40 min each at either low- or high-intensity level. TRA group trained on 6 days a week, with two sessions at low and four at high intensity. Individual training program for HRV group was based on individual changes in high-frequency R-R interval oscillations measured every morning. Increase or no change in HRV resulted in high-intensity training on that day. If there was significant decrease in HRV (below reference value [10-day mean-SD] or decreasing trend for 2 days), low-intensity training or rest was prescribed. Peak oxygen consumption (VO(2peak)) and maximal running velocity (Load(max)) were measured in maximal treadmill test before and after the training. In TRA group, Load(max) increased from 15.1 +/- 1.3 to 15.7 +/- 1.2 km h(-1) (P = 0.004), whereas VO(2peak) did not change significantly (54 +/- 4 pre and 55 +/- 3 ml kg(-1) min(-1) post, P = 0.224). In HRV group, significant increases were observed in both Load(max) (from 15.5 +/- 1.0 to 16.4 +/- 1.0 km h(-1), P < 0.001) and VO(2peak) (from 56 +/- 4 to 60 +/- 5 ml kg(-1) min(-1), P = 0.002). The change in Load(max) was significantly greater in HRV group compared to TRA group (0.5 +/- 0.4 vs. 0.9 +/- 0.2 km h(-1), P = 0.048, adjusted for baseline values). No significant differences were observed in the changes of VO(2peak) between the groups. We concluded that cardiorespiratory fitness can be improved effectively by using HRV for daily training prescription.
本研究的目的是测试心率变异性（HRV）在日常耐力运动处方中的效用。26名健康、中等健康水平的男性被随机分为预定义训练组（TRA，n = 8）、HRV指导训练组（HRV，n = 9）和对照组（n = 9）。为期四周的训练期包括每次持续40分钟的低强度或高强度跑步训练。TRA组每周训练6天，其中两次低强度训练，四次高强度训练。HRV组的个人训练计划基于每天早晨测量的高频R-R间期振荡的个体变化。HRV增加或无变化则当天进行高强度训练。如果HRV显著下降（低于参考值[10天均值-SD]或连续两天呈下降趋势），则安排低强度训练或休息。在训练前后的最大跑步机测试中测量峰值耗氧量（VO(2peak)）和最大跑步速度（Load(max)）。在TRA组中，Load(max)从15.1±1.3增加到15.7±1.2 km h(-1)（P = 0.004），而VO(2peak)无显著变化（训练前54±4，训练后55±3 ml kg(-1) min(-1)，P = 0.224）。在HRV组中，Load(max)（从15.5±1.0增加到16.4±1.0 km h(-1)，P < 0.001）和VO(2peak)（从56±4增加到60±5 ml kg(-1) min(-1)，P = 0.002）均显著增加。与TRA组相比，HRV组Load(max)的变化显著更大（0.5±0.4 vs. 0.9±0.2 km h(-1)，P = 0.048，经基线值调整）。两组间VO(2peak)的变化无显著差异。我们得出结论，通过使用HRV进行日常训练处方可以有效提高心肺适能。
